High Performance Network Port Scanners

Masscan is a command-line network scanner designed for large-scale discovery and infrastructure reconnaissance. It identifies open ports across specific network segments or the entire internet by probing vast address ranges with high efficiency. The tool functions as an asynchronous packet engine, bypassing standard operating system kernel networking stacks to transmit raw packets directly from application memory. The project distinguishes itself through a specialized architecture that manages millions of concurrent connections by separating packet transmission and reception into independent

ZMap is a fast single packet network scanner designed for Internet-wide network surveys.

Nmap is a command-line network security scanner and reconnaissance framework designed for infrastructure mapping and security auditing. It functions as a packet crafting utility that probes target systems to identify active hosts, detect open ports, and determine the services and operating systems running on a network. The tool distinguishes itself through its ability to perform raw socket packet injection and stateful connection tracking, allowing it to bypass standard operating system networking stacks. It utilizes an asynchronous concurrency model to manage large-scale network scans and em

RustScan is a high-speed network reconnaissance tool designed for automated port discovery and service enumeration. It functions as an automated vulnerability scanner that identifies open ports and active services across network environments, providing a foundation for mapping attack surfaces and gathering intelligence on target systems. The tool distinguishes itself through its ability to dynamically adjust scanning parameters and concurrency in real-time based on system feedback, ensuring efficient performance while preventing network congestion. It features an extensible architecture that

Ladon is an internal network penetration scanner and vulnerability assessment tool designed to identify high-risk security flaws and assets across network segments. It operates as a fileless security scanner, executing its engine and modules directly in memory to avoid leaving a disk footprint on target systems. The project is distinguished by its integration as a plugin for command beacons, specifically within the Cobalt Strike framework. This allows for memory-resident network discovery and vulnerability detection. It further supports stealth operations through payload and script obfuscatio

RustScan is a high-speed TCP network scanner written in Rust, designed for security reconnaissance and network mapping. It functions as an automated port discovery engine that identifies open ports on remote hosts using IPv6 addresses, CIDR ranges, or bulk input files. The tool is built for rapid surface area discovery, utilizing parallel port processing and OS-aware performance optimizations to identify active services. It allows for scan precision tuning through adjustable connection timeout thresholds and concurrent request controls to balance speed and accuracy. The system integrates wit

ipscan is a cross-platform network auditor and Java-based network scanner used for discovering networked devices and exporting scan results. It functions as an IP address range scanner and a TCP/UDP port scanner to identify active hosts and open services on a network. The application features a plugin-based fetcher architecture that allows the integration of custom data collection fetchers to retrieve specific hardware or software information from discovered hosts. Its broader capabilities include local network discovery, network port auditing, and the creation of network asset inventories.

Nettacker is an automated penetration testing framework designed to orchestrate reconnaissance, port scanning, and vulnerability detection. It functions as a network reconnaissance tool and vulnerability scanner that identifies open ports, fingerprints services, and checks systems against databases of known security flaws. The framework distinguishes itself by combining a web application crawler for discovering hidden paths via fuzzing with a vulnerability management system that persists scan results in a database to track historical assessments. It also includes specialized capabilities for

Naabu is a port scanner library and tool that probes hosts for open ports using SYN, CONNECT, and UDP methods to identify active services. It functions as a Go library for embedding port scanning into programs, and as a standalone tool that accepts targets as hostnames, IP addresses, CIDR ranges, or ASN numbers. The tool discovers live hosts before scanning, filters ports by range or top lists, and can integrate with Nmap for service version detection. The project distinguishes itself through its SYN-based port probing approach that sends TCP SYN packets and analyzes responses without complet

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